For PR #3406
- Updated naming from 'redirect' to 'initate/initation'.
- Updated phpunit.xml and .env.example.complete files with the new
option.
- Cleaned up controller logic a bit.
- Added content and design to the new initation view to not leave user
on a blank view for a while.
- Added non-JS button to initiation view as fallback option for
progression.
- Moved new test to it's own Test class and expanded with additional
scenario tests for better functionality coverage.
